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Causes and symptoms
The adult itch mite has a rounded body about one-fiftieth of an inch long. The skin lesions are caused by the female, which burrows beneath the skin and digs a short tunnel parallel to the surface, in which it lays its eggs. The eggs hatch in a few days, after which the baby mites find their way to the skin surface, where they mate and complete the life cycle.
sca·bies(skā'bēz), Scabies, a singular noun, is the name of a skin disorder, not of the mite that causes the disorder. Although the word is correctly pronounced skā'bē-ēz, the latter two syllables are usually fused in the U.S.
scabies/sca·bies/ (ska´bēz) a contagious skin disease due to the itch mite, Sarcoptes scabiei; the female bores into the stratum corneum, forming burrows (cuniculi), attended by intense itching and eczema caused by scratching.scabiet´ic
scabiesMite infestation Dermatology A severe form of infestation with the itch mite, Sarcoptes scabiei var hominis, which most commonly affects children, and spreads by direct physical contact with infected individuals–ergo it is often familial or institutional; it is characterized by intense itching that develops ± 1 month after the first exposure to the mite, which infers that the manifestations are due to hypersensitivity Clinical Intensely pruritic linear eruption corresponding to the tracks of the burrowing beasts; the pruritus results in excoriation and secondary pyoderma, often in the head & neck with sparing of the palmoplantar regions; while the papules and 'tracks' of the burrowing mite are most prominent on the hands and arms, the 'scabies rash' is found on the armpits, waist, buttocks, inner thigh, and ankles, sites that where S Scabiei is rarely found Diagnosis Established by dissecting organisms or eggs from mite tunnels, placing them in 20% KOH or mineral oil and examination by the LM Treatment Lindane lotion, benzene hexachloride. See Crusted scabies.
scabies(skā′bēz) [L. scabies, itch]
An itchy rash that worsens at night and that involves multiple members of the same household is a common presentation.
Because the disease is often missed and occasionally overdiagnosed, scrapings from suspect lesions are examined microscopically to confirm the presence of the mite, its eggs, or its excretions.
For children 2 months and older and nonpregnant adults, permethrin 5% cream is applied to the entire body surface. The eyes and mouth are avoided when the cream is being applied. The cream is thoroughly washed off after about 8 to 14 hr. Retreatment is sometimes required if the itch persists for more than a few weeks. Alternatively, nonpregnant patients may be treated with ivermectin given orally. Pregnant women and infants under 2 months of age should be treated with 6% precipitated sulfur in petrolatum daily for 3 days. Infection control in the home includes the washing of all linens, towels, and clothing with hot water and drying them thoroughly.
scabiesSkin infestation with the mite parasite Sarcoptes scabei which burrows into the superficial layers, usually of the hands or wrists, to feed on dead epidermal scales and lay eggs. Scabies is acquired by direct close contact, sometimes from domestic animals with mange. There is intense itching and damage is often caused by scratching and secondary infection. Treatment with insecticide lotions such as benzyl benzoate, is effective, but all members of the family should be treated if the parasite is to be eliminated.
scabieshighly contagious, very pruritic, vesicular skin reaction caused by host acute inflammatory response to female scabies mite faeces within the epidermis; typical skin sites affected include finger webbing, volar aspect of wrist; patient and all contacts should be treated with topical scabicides (e.g. permethrin (Lyclear) or 25% benzyl benzoate BP preparations) and antipruritic preparations (e.g. 10% crotamiton cream [Eurax])
Sarcoptes scabiei and distinguished by persistent itching that creates a raw, irritated lesion. A papular, pruritic rash may develop on the thighs, flexor region of the wrist, or the webs between the fingers approximately 2 days to 4 months after the first infection. A secondary bacterial infection is a potential complication.
Sarcoptes scabiei, the itch mite, characterized by intense itching of the skin.
Patient discussion about scabies
Q. Can scabies be on the face? About a week ago, several bumps, red and itchy, appeared on my face. I have had scabies on other parts of my body and although it feels quite similar, it doesn’t really look the same. Can it be scabies? Is it other thing?